Operating instructions

6-18 MAY 1980
TABLE XI
MAGNETIC PARTICLE INSPECTION
FLUORESCENT METHOD PREFFERED,
WET CONTINUOUS PROCEDURE REQUIRED
Part
*Method of
Magnetization
AC or DC
Amperes
Critical Areas Possible Defects
Crankshaft
Connecting Rod
Camshaft
Piston Pin
Rocker Arms
Gears to 6 Inch
Diameter
Gears over 6 Inch
Diameter
Shafts
Thru Bolts
Rod Bolts
Circular and
Longitudinal
Circular and
Longitudinal
Circular and
Longitudinal
Circular and
Longitudinal
On Conductor Bar
and Single
Between Heads
Circular or
on Center
Conductor
Shaft Circular
Teeth Between
Heads Two Times
90°.
Circular and
Longitudinal
Circular and
Longitudinal
2000
1500
1500
1000
1000
800
1000 to
1500
1000 to
1500
1000 to
1500
500
Journals, fillets, oil holes,
thrust flanges, prop flange.
All areas.
Lobes, Journals drilled
hole edges
Shear planes, ends,
center.
Pad, socket under side
arms and boss.
Teeth, Splines, Keyways.
Teeth, Splines.
Splines, Keyways, Change
of Section.
Threads Under Head.
Fatigue cracks, heat
cracks, flange cracks,
from prop strike
Fatigue cracks.
Heat cracks.
Fatigue cracks.
Fatigue cracks.
Fatigue cracks.
Fatigue cracks.
Fatigue cracks.
Fatigue cracks, heat
cracks.
Fatigue cracks.
NOTE: (*)
LONGITUDINAL MAGNETISM: Current applied to solenoid coil surrounding the work.
CIRCULAR MAGNETISM: Current passed through work or through non-magnetic conductor
bar inserted through work.